Machine for applying box-corner stays.



H. DE SMITH.

MACHINE FOR APPLYING BOX CORNER STAYS.

APPLICATION FILED DEC. 20.1909.

Patented Nov. 16, 1915.

2 SHEETS-SHEET I.

l/VI/E/VTOR +Q-:7.

ATTORNEY m k K? N H. DE SMITH.

MACHINE FOR APPLYING BOX CORNER STAYS.

APPLICATION FILED DEC. 20, 1909.

1,160,390. Patented Nov. 16, 1915.

2 SHEETS-SHEET 2- Z llVVE/VTOR ATTORNEY COLUMBIA PLANDGIIAPH 60.,WASHINOTON, D. C-

HENRY DE SMITH, OF ROCHESTER, NEW YORK,

an pron,

ASSIGNOR TO M. D. KNOWLTON" COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NET/V YORK.

MACHINE FOR APPLYING BOX-CORNER STAYS.

Specification of Letters Patent.

Patented Nov. 16, 1915.

Application filed December 20, 1909. Serial No. 534,108.

7 '0 all whom it may concern:

Be it known that I, HENRY Dn SMITH, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements inMachines for Applying Box-Corner Stays, of which the following is a, specification.

This invention relates to that class of machines adapted for applying stays or reinforcing strips to the corner joints of boxes or other receptacles made of paper-board or like material, and in which are embodied stay-strip applying means and stay-strip feeding-means; the said feeding means being operative to feed a continuous staystrip from a supply roll to said applying means to be acted upon thereby in usual and well-known manner. l

The present invention relates particularly to improvements in the stay-strip feeding mechanism of such class of machines, and has for its main object the provision of a feeding mechanism that will be so constructed and organized as to permit of the machine as a whole being made smaller and more compact in form than heretofore, and that will also be capable of effective operation under all conditions of work without liability of undue strain or Wear on the working parts thereof. This object is vattained by means of the novel features of construction and combinations of parts hereinafter described and claimed.

Referring now to the accompanying drawings forming part of this specification,

Figure 1 is a side elevation, partly in section, of a machine embodying 'my invention. Fig. 2 is a front elevation of the ma chine. Fig. 3 is a sectional detail showing the yieldable connection between two levers of the stay-strip feeding mechanism.

Similar reference characters designate lngs.

frame of the machine is formed by an integral casting embodying a horizontal bedplate 1, a vertical standard 2 at one end of said bed-plate, aihorizontal arm 3 at the standard and overlying arm. This frame,1

like parts in the several figures of the draw- I As shown in said drawings, the main upon which the several operative parts of the machine are mounted, is supported at the proper height upon a suitable subframe or support 5, a portion only of which is shown in the drawings.

The stay-applying means of this machine is substantially the same as that of other machines of the same class and includes two cooperating presser dies, one of which is normally stationary and the other reciprocatory. The stationary die, which is also termed an anvil, is indicated at 6. This die is in the form of an elongated bar arranged horizontally and supported in the standard 2 somewhat above the bed-plate 1 with its front end extending beyond the face side of the standard to support the boxes. or other work thereon. The said die orlanvil 6 is fitted to slide longitudinally in its seat or hearing in the supporting frame so that its front end portion may be extended a greater or less distance from the face of the standard 2 according to the depth of the. box to he stayed. Said die or anvil may be secured in its adjusted position by any suitable means, the means herein shown for such purpose comprising a clamp-bar 7 resting at one end on a riser 8 on the bed-plate and at its other end resting on the upper fiattened portion of the rear end of the anvil and being adapted to be held in clamping engagement with said anvil by means of a clamp-screw 9. The other or reoiprocatory die, indicated at 10, is located at the front side of the standard 2 for cooperation with the upper face of the projecting front end of the lower die or anvil 6, and is suitably attached to a vertically acting slide or plunger 11 which is operative in guides 12, 12, at the face side of the standard 2 and connected through the medium of a suitably constructed pitman 13 with an actuating part, here shown as a crank-pin 14 carried at the front end of a driving shaft 15 mounted in the upper horizontal arm 3 of the supporting frame; said shaft being adapted to be "connected with or disconnected from a driving'pulley 16 through the medium of a suitable clutch (not shown) for the purpose of controlling the action of the die 10 and associated work-.

, ing parts.

Inthe operation of the machine, as hereinbefore referred to, the stay-strip, indicated c and thereafter usualjandwellknown mannerfi the corner ofa-boxsupported on" the lower y o ted ine die; following which, a downward movement of the plunger 11v first causesta cutter 17 carried thereby to sever the'st'ay to applied to the box from the continuous strip,

thereby to apply the severedstay to the b'oX corner by cooperation with the lower die, in I'will now describe the construction and operation of the said stay-feeding mechanism. This zteed-ing' mechanism comprises a reciprocai tory strip-engaging device together with means for operating said device in a manner whereby it will be cause'd to engage and carry forwardthe strip'i-n its fOrwardfeeding movement and 1 then become released from the strip at the limit of .its forward movement so as to movebackwar'dly without producing any corresponding movementot the strip. Said strip-engaging device itself is'or' substantially usual and well-known construction and-comprises plate 18 islide ably "connected with a stationary; guide-plate l9 andiv'havingconnectedtherewith two co g"grippingjawsariangedto permit ODBIatIII V df tlie" passage of:- the stay strip therebetween; one ofsa id jaws, indic'atediat 20, be-

ing-filxediwith respect tot'he plate 1.8an'd located in' position for "engagement with the stay-strip "at the undersidethereof, and :the other jaw, indicated at 21, being pivoted 'to' I the plate 181and'ilocatedzinposition for engage-ment-with the strip at the upper side thereof. 'VVith "this construction of device, the movable or pivoted jaw 21 shouldwbe' caused :to cooperate with the aw 2.0 .to enga'geand carry forward the strip upon the forward movement otthe device, and to release the strip 'at 'the limit of theforward movement o fvthe device and-'main'tain such release during thereturn movement" of the device." Such/operation of the strip-engaging device is effected in the'pre'sent case and in accordance with. my invention by suitable means operated from the vertically acting plunger 11 of the strip-applying-means; These "means for operating the strip-engag-' lIlQI"Cl6VlC6"flTO1I1tlI8 plunger-11 may be of any-suitable construction capable of 'per forming'the required functions. the same in the present'icase including a-series of operatively connected levers, 'indicatecllat 23," 24,

and :25;"the lever 23"being' mounted on a pivotpin 26" on the 'frame with one end havmg operative connection with the plunger llbym'eans of ananti-friction roll27 =on said lever' engaging the plunger within a se'at28 thereimand the levers 24- amass both being mounted on a second pivot-pin 28 on the frame and-both being 'op'eratively'conn' ectedufor movementi'n unison with the Causes thedie 10 also carried lever Qthaying operative connection with the lever 23 by means of an anti-friction roll 29 on one lever engaging the other lever within v an elongated slot 30 therein, and with the lever" '25 having operative connection through a linlr 31o with a lever-arm 21 of the movable or pi'v'o'tedgripping jaw 21 of the strip engaging device. Vith this described combination of parts, the said levers are rocked on their pivots upon the vertical movement of the plunger 11 and thereby caused to operate 'saidunovable j aw 21 of the strip eng'aging"device in usual manner, that is, upon the'forward throw of the lever '25 the saidideviceis git en a corresponding for ward movement with the jaw 21in gripping engagement with the strip and upon the backward orreturn throw 'of th'e lever 2'5 the said device is given corresponding backwo'rdmovement with the jaw 2ll r-aised and released from engagement with the strip.

' A's well'ltnown those familiar with the art, the-length o trstay fedibetween the dies 610 should .vary" according; to the depth of the box to be stayed, andthisis arranged for by the provision o fumeans' for regulating the length o'flthe feed stroke or movement of the strip enga g ing device. case two stops are'prov-ided forengagement with the feed lever 25 to regulate theextent of its movement and thereby'thatofthc eon,-

nected strip engaging' device; one of; the

stops, indicated at 3?,flim'iting the forward movement :of l the lever and the other stop, indicated at 33,Jlimrting the baClQWZlild-fl-DOV? menfiofithe lever. The stop. 33iis sho vn as.

being formed at the upper' end of :a lever 34: W'hlChwlS pivoted-ato the web' 4 ot-the sup-c porting frame at 35- with its lower end 113V: ing slot=and pin connection 36 with, the

rear end *of the die or anvi lfi; VViththlisi connection of the stop-lever 34; with the anvi'lfl6, forward or backward adjustment er the latter to accommodate diiterent. depths of boxes also operates 'to shiftithe position gag-in'g device is adjustable, it twill-be under:v

stood that the connections between the said plungerand, the *strip-engaging,fidevice should be :sufliciently yieldable to permit of any difference in ,the relativemovements of said'parts. For instance, thelmovementflof the levers 23 and 2 45, as imparted thereto from the'plunge'r 11 is suflicientttoimpart a maximum length of ifeed stroketoithe strip.-

engaging device,but,-in case the stop 38 is,

set to 'caus'e' shorter length of feed stroke In the present the extent of whereby different,

to said strip-engagingdevice, the feed-lever will be engaged by thestop=33 and its movement be limited thereby p rioryto the limitiof upward"movement of the plunger. To provide for this and permit the full movement of I the i plunger ii'without ,breakage or other damage to tl'ieconnect ingparts, the

connection between the levers 24 and 25 is a,

yieldable one andisvprovided as follows: At

their point of connection with the pivot-pin- 28, the said levers 24 and 25 are frictionally clutched or connected, preferably with theirv adjacent faces in contact with an interposed friction washer 37 of leather or other suitable material, ina manner whereby they will be caused to normallymove in unison during the movement of the plunger and strip-engaging I device,

' shown in Fig. 3, comprise an end-thrust ball bearing 38 at the inner end of the pivot-pin 28 to receive the contact of the adjacent lever 25, and an adjustable nut 38 threaded onto the outer endof the pivotpin'28 and acting against the adjacent lever 24 through V a spring 39 to maintain the desired frictional connection of said levers.

Upon the forward or feeding movement of the lever 25 and connected strip-engaging device, the said lever is brought into engagement with the forward stop 32 prior to the limit of the down stroke of the plunger for operating the connected cutting and clamping devices. This difference in movement of the parts, however, is also provided for by the described yieldable connection between the levers 24 and 25.

Having now illustrated and described one practical embodiment of my invention, I wish it to beiunderstood that I do not limit myself to the particular embodiment of the invention so illustrated and described, as the same may be more or less materially moditied without departure from the spirit of my invention as called for in the following claims.

What I claim is:

1. In a machine for applying fastening stays, the combination with stay-strip applying means including a reciprocating pressing member, of a feeding mechanism for imparting intermittent feeding move-v ment to a continuous stay-strip and includ ing a reciprocating slide having a pair of strip-engaging jaws mounted thereon between which the stay-strip passes and one of which jaws is pivoted, and connections from said reciprocating pressing member to said pivoted jaw operative to rock the latter to d f pr leasine p i ion-and aw jaw-supportingslide,

to impart reciprocating movement tothe 2. lnxamachine for applying fastening stays, the combinationwith stay-strip-applying m eans;.incl iidinga reciprocat ng "pressing member, of a feeding mechanism; for -imparting intermittent feeding movement to a continuous stay-strip and including "a Kreciprocating slide having a pair of stripengaging jaws mounted thereon between which the stay-strip passes and one of which jaws is pivoted, adjusting means for varying the working stroke of said jaw-supporting slide, and yieldable'connections from said reciprocating pressing member to said pivoted jaw operative'to rock the latter to and from strip-engaging position and also to impart reciprocating movement to the jaw-supporting slide. I I Ina machine for applying fastening stays, thecombination with stay-strip apof a stay-strip feeding mechanism including a pair of aws between which the stay-strip passes and one of which jaws is pivoted, a system of levers connect ing said pivoted jaw to said reciprocating pressing member whereby the aw is brought into positive engagement with the stay-strip prior to the feeding movement of the aws, a yielding connection between said levers, and

an adjustable stop arranged in the path of plying means including a reciprocating;

I'QSSIIIO" member b 7 end to said reciprocating pressing member, a Y

pivot pin, a pair of levers mounted on said pivot pin and extending in different direc tions therefrom, one of said pair of'levers having connection with said rocking lever and the other having operative connection with the said pivoted jaw of the feeding mechanism, a friction member interposed between the adjacent ends of said pair of levers at their point of support upon. the pivot pin, and a tension spring carried on said pivot pin for yieldingly binding said pair. of levers together for movement in unison.

5. In a machine forapplying fastening stays, the combination with staystrip applying means including a reciprocating pressing member, of a feeding mechanism for imparting intermittent feeding movement to a continuous stay-strip and including a reciprocating strip-engaging device mounted independently of said pressing member, means for limiting the movement of said 

